TPS2373-3RGWR

{
  "slug": "tps2373-3rgwr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Power Over Ethernet Controllers, VQFN-20(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "tps2373-3rgwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tps2373-3rgwr.kicad_sym",
    "tps2373-3rgwr.kicad_mod",
    "tps2373-3rgwr.glb",
    "tps2373-3rgwr.step",
    "tps2373-3rgwr.lbr",
    "docs/hero.png",
    "docs/tps2373-3rgwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tps2373-3rgwr-hero.glb",
    "tps2373-3rgwr-hero.overlay.json",
    "tps2373-3rgwr-etched.glb"
  ],
  "component": {
    "mpn": "TPS2373-3RGWR",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-20(5x5)",
    "pin_count": 21,
    "category": "Power Supply Chip",
    "subcategory": "Power Over Ethernet Controllers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tps2373",
    "parts": {
      "symbol": "tps2373-3rgwr.kicad_sym",
      "footprint": "tps2373-3rgwr.kicad_mod",
      "model_3d": "tps2373-3rgwr-hero.glb",
      "model_3d_plain": "tps2373-3rgwr-etched.glb",
      "model_3d_step": "tps2373-3rgwr-etched.step",
      "model_3d_step_plain": "tps2373-3rgwr.step",
      "lbr": "tps2373-3rgwr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2860885",
      "digikey": "296-51872-2-ND",
      "mouser": "595-TPS2373-3RGWR"
    },
    "distributor_check": {
      "checked_at": "2026-10-26T06:42:59Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-51872-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-TPS2373-3RGWR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive PoE input supply rail (recommended 0 to 57 V, absolute maximum 100 V), bypassed to VSS with a 0.1 µF capacitor."
      },
      {
        "number": "2",
        "name": "DEN",
        "type": "bidirectional",
        "description": "A 24.9 kΩ resistor between DEN and VDD provides the PoE detection signature, and pulling DEN to VSS during powered operation turns off the hot-swap MOSFET."
      },
      {
        "number": "3",
        "name": "CLSA",
        "type": "output",
        "description": "A resistor from CLSA to VSS sets the first classification current (Table 1 values, for example 63.4 Ω for class 4), with about 2.5 V applied while VDD-VSS is between 10.9 V and 22 V."
      },
      {
        "number": "4",
        "name": "VSS",
        "type": "power_in",
        "description": "Negative supply rail from the PoE source, which must be connected to the exposed pad."
      },
      {
        "number": "5",
        "name": "VSS",
        "type": "power_in",
        "description": "Negative supply rail from the PoE source, which must be connected to the exposed pad."
      },
      {
        "number": "6",
        "name": "CLSB",
        "type": "output",
        "description": "A resistor from CLSB to VSS sets the second and all subsequent classification currents, with about 2.5 V applied while VDD-VSS is between 10.9 V and 22 V."
      },
      {
        "number": "7",
        "name": "REF",
        "type": "output",
        "description": "Internal 1.5 V voltage reference, which requires a 1% 49.9 kΩ resistor from REF to VSS."
      },
      {
        "number": "8",
        "name": "AMPS_CTL",
        "type": "output",
        "description": "Automatic MPS output, where a resistor from AMPS_CTL to VSS rated for the MPS current sets the pulse amplitude and leaving it open disables auto-MPS."
      },
      {
        "number": "9",
        "name": "MPS_DUTY",
        "type": "input",
        "description": "MPS duty-cycle select referenced to VSS and driven by a precision current source (limited to about 5.5 V), where open, about 60.4 kΩ to VSS, or short to VSS selects 5.4%, 8.1%, or 12.5% duty cycle."
      },
      {
        "number": "10",
        "name": "APD",
        "type": "input",
        "description": "Auxiliary power detect input, where raising it more than 1.65 V above RTN disables the hot-swap MOSFET, forces TPH active (low), and turns off TPL and BT; connect to RTN if unused."
      },
      {
        "number": "11",
        "name": "RTN",
        "type": "passive",
        "description": "Drain of the PoE hot-swap MOSFET and the return path from the load to the controller, rated 0 to 57 V recommended with 1.2 A sink current for the TPS2373-3."
      },
      {
        "number": "12",
        "name": "RTN",
        "type": "passive",
        "description": "Drain of the PoE hot-swap MOSFET and the return path from the load to the controller, rated 0 to 57 V recommended with 1.2 A sink current for the TPS2373-3."
      },
      {
        "number": "13",
        "name": "PG",
        "type": "output",
        "description": "Open-drain, active-high power-good output referenced to RTN that is pulled to RTN during inrush and high-impedance afterward, with a recommended sink current of 3 mA."
      },
      {
        "number": "14",
        "name": "VC_OUT",
        "type": "output",
        "description": "Low-voltage supply output for the PWM controller, normally bypassed to RTN with 1 µF and requiring a larger capacitor if a 12 V adapter is used."
      },
      {
        "number": "15",
        "name": "VC_IN",
        "type": "input",
        "description": "Auxiliary bias input, typically from the converter transformer aux winding, bypassed to RTN with 0.1 µF and recommended for 0 to 15 V relative to RTN."
      },
      {
        "number": "16",
        "name": "UVLO_SEL",
        "type": "input",
        "description": "UVLO select referenced to RTN and internally pulled up to 5.5 V, where it is left open for a PWM falling UVLO above 7.25 V and pulled low for a value between 4.25 V and 7.25 V."
      },
      {
        "number": "17",
        "name": "TPL",
        "type": "output",
        "description": "PSE power-allocation output (binary coded), open-drain and active-high referenced to RTN, which goes open-circuit when an auxiliary adapter is detected on APD."
      },
      {
        "number": "18",
        "name": "TPH",
        "type": "output",
        "description": "PSE power-allocation output (binary coded), open-drain and referenced to RTN, which is pulled low when an auxiliary adapter is detected on APD."
      },
      {
        "number": "19",
        "name": "BT",
        "type": "output",
        "description": "Open-drain, active-low output referenced to RTN that indicates an IEEE 802.3bt (Type 3 or 4) PSE, which goes open-circuit when an adapter is detected on APD."
      },
      {
        "number": "20",
        "name": "NC",
        "type": "unconnected",
        "description": "No-connect pin that must be left open."
      },
      {
        "number": "21",
        "name": "PAD",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet pin table gives no I/O type for RTN (shown as '—'). Type 'passive' was assigned based ; Datasheet lists DEN as 'I/O'; mapped to KiCad 'bidirectional'.; Datasheet lists VDD as 'I'; mapped to KiCad 'power_in' because it is the positive supply input rail.",
          "exposed pad 21 added from the footprint"
        ],
        "pages_sent": 37,
        "cost_usd": 0.1988,
        "at": "2026-10-26T06:42:41"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tps2373",
        "pages": 46,
        "sha256": "215423c8efd715bb",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "tps2373-3rgwr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          5.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "9466f19e7a94c1920e0c82ac10746517bca0b846bd3c01a7053914bd9856799f",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tps2373-3rgwr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
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        "footprint_binding": "identity",
        "sha256": "a43eef5d7548a7c6a25c0a4effeec5a6fe39ca6c7058fed1af76d83dcd5fa009",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}